const mongoose = require("mongoose");

mongoose.connect("mongodb://localhost:27017/sh2305");

mongoose.connection.on("connected", ()=>{
  console.log("数据库连接成功");
})

mongoose.connection.on("disconnected", ()=>{
  console.log("数据库连接断开");
})

mongoose.connection.on("error", ()=>{
  console.log("数据库连接失败");
})

module.exports = mongoose;